#include "usart.h"


void USART_NVIC_Config()
{
	NVIC_InitTypeDef NVIC_InitStructure;
	
	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
	
	NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 14;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	
	NVIC_Init(&NVIC_InitStructure);
}




//void USART_EXTI_Config()
//{
//	
//	EXTI_InitTypeDef EXTI_InitStructure;
//	RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
//	USART_NVIC_Config();
//	
//	
//	SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource10);
//	EXTI_InitStructure.EXTI_Line = EXTI_Line10;
//	EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
//	EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
//	EXTI_InitStructure.EXTI_LineCmd = ENABLE;
//	
//	
//	EXTI_Init(&EXTI_InitStructure);
//	
//	

//}

void USART_Config(void)
{
	
	USART_NVIC_Config();
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
	
	GPIO_PinAFConfig(GPIOA, GPIO_PinSource9,GPIO_AF_USART1);
	GPIO_PinAFConfig(GPIOA, GPIO_PinSource10,GPIO_AF_USART1);
	GPIO_InitTypeDef GPIO_InitStructure;
	
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9|GPIO_Pin_10;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	
	GPIO_Init(GPIOA,&GPIO_InitStructure);
	
	
	USART_InitTypeDef USART_InitStructure;
	
	USART_InitStructure.USART_BaudRate = 115200;
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
	USART_InitStructure.USART_Mode = USART_Mode_Rx|USART_Mode_Tx;
	USART_InitStructure.USART_Parity = USART_Parity_No;
	USART_InitStructure.USART_StopBits = USART_StopBits_1;
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;
	
	USART_Init(USART1,&USART_InitStructure);
//	USART_EXTI_Config();
	USART_Cmd(USART1,ENABLE);
	USART_ITConfig(USART1,USART_IT_RXNE, ENABLE);
	

}




int fputc(int ch,FILE *fp)
{
	while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
	USART_SendData(USART1, ch);

}


void USART_Send(char *data)
{
	for(int i = 0;*data;i++)
	{
		while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
		USART_SendData(USART1, *data);
		data++;
	
	}

}


